package lab02.test20;

public class Test20 {
    public static void main(String[] args) {
        String result = "wuei237af243869";
        char tmp;
        for (int i = 0; i < result.length(); i++) {
            tmp = result.charAt(i);
            if (tmp >= '0' && tmp <= '9') {
                System.out.print(tmp);
            }
        }
    }
}
